Transom-lifter



(No Model.)

A. TWYMAN.

TRANSOM LIPTBR. No. 407,624. Patented July 23, 1889.

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UNITED STATES PATENT OFFICE.

AARON TWYMAN, OF PULLMAN, ASSIGNOR TO THE PULLMANS PALACE CAR COMPANY,OF CHICAGO, ILLINOIS.

TRANSOMFLIFTER.

SPECIFICATION forming part of Letters Patent N0. 407,624, dated July 23,1889. Application led February 23, 1889. Serial No. 300,881. (No model.)

To all whom t may concern:

Be it kn own that I, AARON TWYMAN, a subject of the Queen of GreatBritain, residing at Pullman, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in TransomOpening, Regulating, and Locking Devices, of which the following is aspecification.

My invention relates to means for opening,

1o regulating, and locking transoms or other window-sash, and it isparticularly applicable to the Ventilating of street-cars, wherein aseries of transoms or small window-sash are pivoted in the verticalwalls of the deck of the car.

I5 In carrying' out my invention I prefer to pivot the transoms or sashby pivot-pins inserted in the end rails thereof, and to connect each ofthe said transoms by suitable jointed levers to a common operating-rod.Said rod zo I provide with an improved locking device, whereby thetransoms may be locked in any desired position and the ventilation ofthe car perfectly and conveniently regulated.

In the drawings, Figure l is a transverse 2 5 vertical section through aportion of the deck and roof of a street-car, taken on line 1 l of Fig.2, and showing my improved locking device in elevation, and showing,also, by dotted lines a secondary position of the transoms;

3o and Fig. 2 is a side elevation showing the interior of one wall ofthe deck with my appli-v ances in proper relative position and showingthe deck-roof in section.

Referring to the drawings, A representsy 3 5 one of the vertical sidewalls of the deck of a street-car having openings therein for purposesof ventilation, said openings being provided with transoms B, whose endrails are pivoted, as at h, to the casings of the openings. Saidtransoms may, however, be hinged at one side.

D is an operating-rod, which will be carried in suitable bearingsparallel to the base-rail of the wall A. This rod may be hollow, asshown in cross-section in Fig. l, and it will have rigid rock-arms D',which may be secured by means of bolts d, passing through feet d of thearms.

E represents an arm which is pivoted at one end to the rock-arm D and atthe other to a 5o bracket F on the transoms. It will be understood thata series of these transoms may be thus connected to a commonoperating-rod or rock-shaft.- Secured upon or connected to thisoperating-rod at some convenient point is a hand-wheel G, the run ofwhich is preferably iiuted or hollowed out, as at g. A iiat spring H,preferably curved, as shown, has one of 'its ends secured to the wall ofthe car, while the curved portion of its free end fits into the 6ohollow g of the operating-wheel G. 'Ihe eXf treme end of the spring IIabove the curved portion may also have a bearing on the wall of the car;but it will be so disposedwith reference to the hand-wheel that theturning of the latter in manipulating the windows will necessarily causethe spring to straighten out y or be forced inwardly toward the wall ofthe car by reason of the raised portions g of the periphery of the wheelcoming in contact 7o therewith, and as soon as said raised portion isturned past the curved part of the spring the latter resumes its normalposition, as shown in Fig. l, and, engaging the wheel, securely locksit, as well as the rod and transoms, in place. By this means it isevident that the transoms can be locked at any desired angle simply byturning the wheel more or less. The lock is thus automatic, being setand released by the operation of the transoms, and 8o the uniformventilation of the car is conveniently secured with slight effort.

It will be found convenient to place the handwheel near one end of thecar, so that the driveror conductor may reachit without pass- 8 5 ing`through or into the car. These handwheels may, of course, be duplicatesat each end of the rod; v

Of course the device is applicable to single transoms as well as aseries. It is apparent 9o that the periphery of the hand-wheel might beotherwise formed than with the depressions and the spring adapted tolock the same by friction and itis also apparentthat the spring might bereversed and its hollow engage the raised portions of the rim, and otherforms of spring might be utilized. I do not regard either of thesesuggested forms asdesirable bination, with mi operating-rod and one ormore transom-arms pvotally Conn eeted therel60,0i" a hand-wheel for JcheOperating-rodhzwing a luted rim, and a curved locking-spring secured tobear yieldingly upon Jche said rim, whereby to look the operating-rod,substantialiy as described.

AARON TWYMAN.

Vitn esses:

FREDERICK C. GOODWIN, T. D. BUTLER.

